摘要
位于长江中游北岸的新滩滑坡是一个中段剪出、上段牵引垮落式继承性古老复活型土石质复式滑坡体群。它由一系列具有成生联系的滑坡体(或崩滑体)串联组合而成。由于应力以分散释放为主,故滑动能量大大衰减。本文认为导致滑坡变形的主因是上部基岩中多组构造裂隙发育,长期岩崩物质使滑体上段产生加载、蠕滑作用,使各段前缓应力集中,产生变形失稳座滑,推动前段、牵动后缘垮落的结果。本文还探讨了滑坡体变形与周缘地质构造条件的关系问题。
Xintan landslide, lying in the north bank of the middle reaches of the yangtze River, is a slide colony in the manner of ancillary,inheritance,falling and reactivity;and consists of the soil and the stone and presents the shear of middle sector and the traction of upper sector.Tt is compounded serially by a series of the slide masses that has a genetic connection each other.The energy of sliding is attenuated considerably because the stress are released mainly in the way of despersion.The sliding deformation is caused basically because the group of tectonic fissures in the upper bedrock are developmental and the long-period rockfall materials lead t he upper sector of sliding mass to produce the loading and creeping action and the fore fringes of each sector to concentrate the stress and to cause the deformation, unstability and sliding,which pull the fore sector and draw the rear fringes to fall.In addition, this paper deals with the relationship between deformed slide mass and structure condition in the neighbour region.
出处
《地壳形变与地震》
CSCD
1990年第4期25-33,共9页
Crustal Deformation and Earthquake
